<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>instruction3</title>
<script src="js/vue.min.js"></script>
</head>
<body>
<div id="app"  v-lz:hello.a.b="message">
</div>

<script>
Vue.directive('lz', {
  bind: function (el, binding, vnode) {
    var s = JSON.stringify
    el.innerHTML =
      'name: '       + s(binding.name) + '<br>' +
      'value: '      + s(binding.value) + '<br>' +
      'expression: ' + s(binding.expression) + '<br>' +
      'argument: '   + s(binding.arg) + '<br>' +
      'modifiers: '  + s(binding.modifiers) + '<br>' +
      'vnode keys: ' + Object.keys(vnode).join(', ')
  }
})
new Vue({
  el: '#app',
  data: {
    message: 'lz!'
  }
})
</script>
</body>
</html>